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-rw-r--r--include/media/media-entity.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/media/media-entity.h b/include/media/media-entity.h
index 28f61f6ee549..a9b31d98e3c6 100644
--- a/include/media/media-entity.h
+++ b/include/media/media-entity.h
@@ -81,6 +81,12 @@ struct media_entity {
struct media_pad *pads; /* Pads array (num_pads elements) */
struct media_link *links; /* Links array (max_links elements)*/
+ /* Reference counts must never be negative, but are signed integers on
+ * purpose: a simple WARN_ON(<0) check can be used to detect reference
+ * count bugs that would make them negative.
+ */
+ int use_count; /* Use count for the entity. */
+
union {
/* Node specifications */
struct {
@@ -129,6 +135,9 @@ void media_entity_cleanup(struct media_entity *entity);
int media_entity_create_link(struct media_entity *source, u16 source_pad,
struct media_entity *sink, u16 sink_pad, u32 flags);
+struct media_entity *media_entity_get(struct media_entity *entity);
+void media_entity_put(struct media_entity *entity);
+
void media_entity_graph_walk_start(struct media_entity_graph *graph,
struct media_entity *entity);
struct media_entity *